Power Factor Correction Capacitors

The power factor of a circuit, for individual equipment or for a larger power supply, is the measure used to determine the efficiency of the circuit. It is calculated using the real power (kW) and reactive power (kVAr) of a circuit, with the real power being that which is actually used to complete the task at hand and the reactive power being that which does not contribute to the task. The higher the power factor (between 0 and 1), the more efficient the circuit, with anything above 0.95 being considered highly efficient. For larger-scale circuits with a higher power load, such as a building's power supply, having a higher power factor results in lower excess charges from power suppliers.

What are power factor correction capacitors?

Power factor correction capacitors are used to increase the power factor of a circuit, bringing the measure closer to 1 and making the system more efficient. Capacitors are used when a lagging current - which is often found in inductive load circuits such as AC induction motors, arc welders, fluorescent lighting and air conditioning - causes the current and voltage to fall out of phase with each other and therefore generates more reactive power. Capacitors correct these variations in current and voltage input, bringing the two back to being closer in phase and improving the efficiency.

RS Components offer a range of power factor correction capacitors from industry-leading brands, including EPCOS, KEMET, Vishay and Wurth Elektronik.

Why is power factor correction important?

Power factor correction has many benefits on both the electrical systems being supplied and the bill payers. By bringing the efficiency up and reducing reactive power, grid instability can be reduced, as can costs. By reducing the reactive power generated in a system or piece of equipment, general power consumption will also decrease and this in turn leads to cost savings. Electricity bills for larger companies and factories can include additional charges, including capacitor charges and reactive power charges, which will also come down when power factor correction equipment is applied.


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Description Price Voltage kvar 50Hz kvar 60Hz Number of Phases Capacitance Dielectric Material Mounting Type Series Length Width Height Minimum Operating Temperature Maximum Operating Temperature Tolerance Minus
New
RS Stock No. 211-2683
Mfr. Part No.BLRCH050A060B40
kr 494,89
Each (In a Pack of 3)
Units
400V ac 5kvar 6kvar 3 - - - - - - - - - -
RS Stock No. 187-5368
Mfr. Part No.PhMKP400.3.20,00-S84
BrandVishay
kr 2 035,535
Each (In a Box of 4)
Units
400V ac 20kvar - 3 3 x 132.6µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%
RS Stock No. 136-4918
Mfr. Part No.B25675A4152J015
BrandEPCOS
kr 1 082,272
Each (In a Box of 9)
Units
415V ac 15kvar 18kvar - 3 x 92.4µF - Stud Mount MKK - - 200mm -40°C +60°C -5%
RS Stock No. 192-3574
Mfr. Part No.B32305A4282B140
BrandEPCOS
kr 1 582,848
Each (In a Box of 4)
Units
440V ac - - 3 154µF Polypropylene Stud Mount MKD - 136 Dia.mm 245mm -40°C +65°C -5%
RS Stock No. 187-5379
Mfr. Part No.PhMKP400.3.20,00-S84
BrandVishay
kr 1 372,87
Each
Units
400V ac 20kvar - 3 3 x 132.6µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%
New
RS Stock No. 211-2828
Mfr. Part No.VLVAW1N03530AA
kr 37 033,49
Each
Units
400V ac 87.5kvar - 3 - - - - - - - - - -
RS Stock No. 136-5124
Mfr. Part No.C9TS6MD5685AARX
BrandKEMET
kr 485,63
Each
Units
440V ac - - - 3 x 68.5µF - Stud Mount C9T - - 230mm -25°C +55°C -
RS Stock No. 192-3575
Mfr. Part No.B32305A4302B040
BrandEPCOS
kr 1 712,165
Each (In a Box of 4)
Units
440V ac - - 3 165µF Polypropylene Stud Mount MKD - 136 Dia.mm 275mm -40°C +65°C -5%
New
RS Stock No. 211-2684
Mfr. Part No.BLRCH063A075B40
kr 521,267
Each (In a Pack of 3)
Units
400V ac 6.3kvar 7.5kvar 3 - - - - - - - - - -
New
RS Stock No. 211-2832
Mfr. Part No.VLVAW3N03512AA
kr 102 544,57
Each
Units
400V ac 200kvar - 3 - - - - - - - - - -
RS Stock No. 187-5369
Mfr. Part No.PhMKP400.3.25,00-S84
BrandVishay
kr 2 928,588
Each (In a Box of 4)
Units
400V ac 25kvar - 3 3 x 165.8µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%
RS Stock No. 192-3557
Mfr. Part No.B25161P0025M000
BrandEPCOS
kr 5 750,352
Each (In a Box of 10)
Units
18kV ac - - 1 250nF Polypropylene Stud Mount MV APP 250mm 115mm 500mm -25°C - -
RS Stock No. 192-3543
Mfr. Part No.B25161G0025M000
BrandEPCOS
kr 4 033,80
Each (In a Box of 10)
Units
7.2kV ac - - 1 250nF Polypropylene Stud Mount MV APP 175mm 115mm 340mm -25°C - -
RS Stock No. 136-5120
Mfr. Part No.C9TS6MD5960AARX
BrandKEMET
kr 355,054
Each (In a Box of 12)
Units
440V ac - - - 3 x 96µF - Stud Mount C9T - - 280mm -25°C +55°C -
RS Stock No. 187-5373
Mfr. Part No.PhMKP525.3.20,00-S84
BrandVishay
kr 1 576,353
Each (In a Box of 4)
Units
525V ac 20kvar - 3 3 x 77µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%
New
RS Stock No. 211-2814
Mfr. Part No.VLVAF8P03535AA
kr 450 136,35
Each
Units
400V ac 800kvar - 3 - - - - - - - - - -
New
RS Stock No. 211-2829
Mfr. Part No.VLVAW2N03531AA
kr 72 725,10
Each
Units
400V ac 137.5kvar - 3 - - - - - - - - - -
RS Stock No. 192-3539
Mfr. Part No.B25161C0025M000
BrandEPCOS
kr 3 719,131
Each (In a Box of 10)
Units
3.6kV ac - - 1 250nF Polypropylene Stud Mount MV APP 175mm 115mm 290mm -25°C - -
RS Stock No. 192-3541
Mfr. Part No.B25161C0050M000
BrandEPCOS
kr 4 033,80
Each (In a Box of 10)
Units
3.6kV ac - - 1 500nF Polypropylene Stud Mount MV APP 175mm 115mm 340mm -25°C - -
RS Stock No. 192-3578
Mfr. Part No.B32305A5202B025
BrandEPCOS
kr 1 475,44
Each (In a Box of 4)
Units
525V ac - - 3 77µF Polypropylene Stud Mount MKD - 136 Dia.mm 200mm -40°C +65°C -5%